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Revision History for A007686 (Underlined text is an addition; strikethrough text is a deletion.)

Showing entries 1-10 | older changes
A007686 Prime(n)*...*a(n) is the least product of consecutive primes which is non-deficient.
(history; published version)
#24 by N. J. A. Sloane at Sat Jul 16 14:20:44 EDT 2022
STATUS

proposed

approved

#23 by Andrey Zabolotskiy at Sat Jul 16 02:48:23 EDT 2022
STATUS

editing

proposed

#22 by Andrey Zabolotskiy at Sat Jul 16 02:08:45 EDT 2022
LINKS

H. W. Gould, <a href="/A007680/a007680.pdf">A class of binomial sums and a series transform</a>, Utilitas Math., 45 (1994), 71-83. (Annotated scanned copy)) [Annotation on p. 81 references this A-number, but the sequence with that annotation is apparently unrelated to this entry and is not present in the OEIS to date. - _Andrey Zabolotskiy_, Jul 16 2022]

STATUS

approved

editing

#21 by Alois P. Heinz at Sat Jun 29 21:04:13 EDT 2019
STATUS

proposed

approved

#20 by Amiram Eldar at Sat Jun 29 17:51:05 EDT 2019
STATUS

editing

proposed

#19 by Amiram Eldar at Sat Jun 29 17:44:00 EDT 2019
LINKS

Amiram Eldar, <a href="/A007686/b007686.txt">Table of n, a(n) for n = 1..1000</a>

MATHEMATICA

a[n_] := Module[{p = Prime[n]}, r = 1 + 1/p; While[r < 2, p = NextPrime[p]; r *= 1 + 1/p]; p]; Array[a, 39] (* Amiram Eldar, Jun 29 2019 *)

STATUS

approved

editing

#18 by Susanna Cuyler at Tue Jan 09 17:53:49 EST 2018
STATUS

proposed

approved

#17 by Rachel Barnett at Tue Jan 09 15:02:40 EST 2018
STATUS

editing

proposed

#16 by Rachel Barnett at Tue Jan 09 15:02:33 EST 2018
LINKS

H. W. Gould, <a href="/A007680/a007680.pdf">A class of binomial sums and a series transform</a>, Utilitas Math., 45 (1994), 71-83. (Annotated scanned copy)

STATUS

approved

editing

#15 by N. J. A. Sloane at Thu Oct 19 03:13:44 EDT 2017
EXTENSIONS

More terms from _Don Reble (djr(AT)nk.ca), _, Nov 10 2005

Discussion
Thu Oct 19 03:13
OEIS Server: https://oeis.org/edit/global/2703

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Last modified August 29 14:29 EDT 2024. Contains 375517 sequences. (Running on oeis4.)